Photonic Lithotripsy: Near-Infrared Laser Activated Nanomaterials for Kidney Stone Comminution

Area of Science:

• Biomedical Engineering
• Materials Science
• Nanotechnology

Background:

• Near-infrared activated nanomaterials are utilized in soft tissue biomedical applications.
• Energy delivery to hard tissues, like kidney stones, is challenging due to their high mechanical strength.

Purpose of the Study:

• To investigate photonic lithotripsy using carbon and gold nanomaterials for human kidney stone fragmentation.
• To evaluate the influence of nanomaterial size and photonic properties on stone comminution efficacy.

Main Methods:

• Development and application of carbon and gold nanomaterials activated by near-infrared light.
• Analysis of stone fragment size and composition post-treatment.
• Assessment of photothermal energy contribution to stone failure mechanisms.

Main Results:

• Successful fragmentation of human kidney stones using photonic lithotripsy.
• Efficacy of stone comminution is directly related to nanomaterial size and photonic characteristics.
• Evidence of surface restructuring and decomposition (calcium oxalate to calcium carbonate) indicating photothermal energy involvement.

Conclusions:

• Photonic lithotripsy presents a promising, low-power, noncontact method for kidney stone treatment.
• This technique demonstrates advantages over conventional laser lithotripsy, including broader applicability to common stones.
• The findings suggest potential for treating other hard tissues like bone and enamel.